<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="util.js"></script>
    <script>
        window.onload = function (){
            var id = getQuery("id");
            alert(id);
        }
    </script>
</head>
<body>
  b.html
</body>
</html>